Terminal device

ABSTRACT

The present invention provides a terminal device. The terminal device includes a middle frame, a light-absorbing and heat-dissipating film disposed in the middle frame, and a display module. The middle frame includes a bottom and a side connected to the bottom. The side encircles the bottom to form a groove on the bottom. The light-absorbing and heat-dissipating film covers the inner surfaces of the bottom and the side. The display module is disposed in the groove.

FIELD OF INVENTION

The present invention relates to the field of display technologies, andin particular, to a terminal device.

BACKGROUND OF INVENTION

With development of display technologies, flat panel display devicessuch as liquid crystal displays (LCD) are widely applied to variousconsumer electronic products such as mobile phones, televisions,personal digital assistants, digital cameras, notebook computers, anddesktop computers due to the advantages such as high definition, powersaving, a thin body, and a wide application range, and have becomemainstream in the display devices. Most LCD devices in current marketsare backlight LCDs, which include an LCD panel and a backlight module.The working principle of the LCD panel is that liquid crystal moleculesare placed between two parallel glass substrates, there are manyvertical and horizontal thin electric wires between the two glasssubstrates, and the electric wires control the liquid crystal moleculesto change directions by electrically energizing to refract light of thebacklight module to generate images.

Generally, the includes a color filter (CF) substrate, a thin filmtransistor (TFT) substrate, a liquid crystal (LC) sandwiched between theCF substrate and the TFT substrate, and a sealant. Processes forming LCDpanel generally include a front-end array process (thin film,lithography, etching, and stripping), a middle-end cell process (whereinthe TFT substrate is attached to the CF substrate), and a back-endmodule assembly process (wherein a driver IC is fixed on a printedcircuit board). The front-end array process is mainly forming the TFTsubstrate configured to control the motion of the liquid crystalmolecules. The middle-end cell process is mainly adding the LC betweenthe TFT substrate and the CF substrate. The back-end module assemblyprocess is mainly fixing and integrating the driver IC on the printedcircuit board, which is further configured to drive the liquid crystalmolecules to rotate, and display images.

Based on different sensing technologies, LCD touch panels may beclassified into four types: a resistive type, a capacitive type, anoptical type, and an acoustic type. Currently, a mainstream touchtechnology is the capacitive type. The capacitive type is furtherclassified into a self-capacitive type and a mutual capacitive type. Acapacitive touch display panel in the current markets is mainly themutual capacitive type. The advantages of the mutual capacitive type arethat the mutual capacitive type is capable of implementing multi-pointtouch control. Based on different structures, the touch display panelmay be classified into two types: an out-cell type and an in-cell type.The out-cell type is providing a touch sensor on the surface of a CF,and providing glass covering on the touch sensor to make a touch panelmodule, and then fitting the touch panel module to a liquid crystalpanel module. The in-cell type is providing a touch sensor in a panelstructure. The touch sensor is directly disposed in a TFT of an LCDpanel module. A touch function is integrated in the display. No out-celltouch panel is needed. Therefore, the thickness is thinner than that ofan out-cell touch panel.

A current touch display module bonds a backlight module and a liquidcrystal panel together by a hollow rectangle adhesive. After the currenttouch control display module is disposed in a middle frame of a mobilephone, the transmitted light may be reflected to the surface of themobile phone via the middle frame of the mobile phone because lighttransmissive materials such as a sealant, a reflective sheet, and thehollow rectangle adhesive of the backlight module may transmit light ofthe backlight module. A user may find shiny white spots on left andright sides of a view area when watching the mobile phone, and blackvisual effects are affected.

SUMMARY OF INVENTION

The objective of the present invention is to provide a terminal device,to prevent shiny white spots from appearing on two sides of a view area,and improve black visual effects.

To achieve the foregoing objective, the present invention provides aterminal device, including a middle frame, a light-absorbing andheat-dissipating film disposed in the middle frame, and a displaymodule.

The middle frame includes a bottom and a side connected to the bottom.The side encircles the bottom to form a groove on the bottom.

The light-absorbing and heat-dissipating film covers the inner surfacesof the bottom and the side.

The display module is disposed in the groove.

The color of the light-absorbing and heat-dissipating film is black.

The middle frame further includes a protrusion disposed on the side. Theprotrusion encircles the side to form an accommodating groove on theside. The accommodating groove is used for accommodating a glass coverplate.

The glass cover plate further includes a touch unit.

The display module includes a backlight module and a display paneldisposed on the backlight module.

The backlight module includes a plastic frame, a light guide platedisposed in the plastic frame, a reflective sheet disposed on one sideof the light guide plate opposite another side of the light guide platefacing the display panel, an optical film group disposed on one the sideof the light guide plate facing the display panel, and a double-sidedadhesive disposed on the plastic frame.

The shape of the double-sided adhesive is hollow rectangle.

The display panel and the backlight module are bonded together by thedouble-sided adhesive.

The glass cover plate and the display module are bonded together by anoptically clear adhesive (OCA).

The glass cover plate includes a visible area disposed over the displaymodule and a shading area surrounding the visible area.

The shading area is provided with ink.

Beneficial effects of the present invention are as follows: The terminaldevice of the present invention includes the middle frame, thelight-absorbing and heat-dissipating film disposed in the middle frame,and the display module. The middle frame includes the bottom and theside connected to the bottom. The side encircles the bottom to form thegroove on the bottom. The light-absorbing and heat-dissipating filmcovers the inner surfaces of the bottom and the side. The display moduleis disposed in the groove. When a light leaking from a side face of thedisplay module is emitted to the side of the middle frame, thelight-absorbing and heat-dissipating film can absorb the light leakingfrom the side face of the display module. The light leaking from theside face of the display module is preventing from being reflected fromthe side of the middle frame to the surface of the display module. Whitespots are prevented from appearing on two sides of the visible area ofthe terminal device. Black visual effects of the terminal device areimproving. In addition, the light-absorbing and heat-dissipating filmcan further dissipate heat from the display module fast during work toreduce a temperature of the terminal device during work and prolong aservice life.

BRIEF DESCRIPTION OF DRAWINGS

Please refer to the following detailed descriptions and accompanyingdrawings related to the present invention to further understand thefeatures and technical content of the present invention. However, theaccompanying drawings are only used for reference and description, butnot for limiting the present invention.

FIG. 1 is a schematic top view of a terminal device according to thepresent invention.

FIG. 2 is a schematic cross-sectional view of the terminal deviceaccording to the present invention.

FIG. 3 is a schematic enlarged cross-sectional view of the terminaldevice according to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The following description of the embodiments is provided by reference tothe following drawings and illustrates the specific embodiments of thepresent disclosure. Directional terms mentioned in the presentdisclosure, such as “up,” “down,” “top,” “bottom,” “forward,”“backward,” “left,” “right,” “inside,” “outside,” “side,” “peripheral,”“central,” “horizontal,” “peripheral,” “vertical,” “longitudinal,”“axial,” “radial,” “uppermost” or “lowermost,” etc., are merelyindicated the direction of the drawings. Therefore, the directionalterms are used for illustrating and understanding of the applicationrather than limiting thereof.

Referring to FIG. 1 to FIG. 3, the present invention provides a terminaldevice including a middle frame 10, a light-absorbing andheat-dissipating film 20 disposed in the middle frame 10, and a displaymodule 30.

The middle frame 10 includes a bottom 11 and a side 12 connected to thebottom 11. The side 12 encircles the bottom 11 to form a groove 13 onthe bottom 11.

The light-absorbing and heat-dissipating film 20 covers the innersurfaces of the bottom 11 and the side 12.

The display module 30 is disposed in the groove 13.

It should be noted that, the middle frame 10 of the present inventionincludes a bottom 11 and a side 12 connected to the bottom 11. The side12 encircles the bottom 11 to form a groove 13 on the bottom 11. Thelight-absorbing and heat-dissipating film 20 covers the inner surfacesof the bottom 11 and the side 12 (that is, covers the entire groove 13).The display module 30 is disposed in the groove 13. When a light leakingfrom a side face of the display module 30 is emitted to the side 12 ofthe middle frame 10, the light-absorbing and heat-dissipating film 20can absorb the light leaking from the side face of the display module30. The light leaking from the side face of the display module 30 ispreventing from being reflected from the side 12 of the middle frame 10to the surface of the display module 30. White spots are prevented fromappearing on two sides of a visible area of the terminal device. Blackvisual effects of the terminal device is improving. In addition, thelight-absorbing and heat-dissipating film 20 can further dissipate heatfrom the display module 30 fast during work to reduce a temperature ofthe terminal device during work and prolong a service life.

In details, the color of the light-absorbing and heat-dissipating film20 is black. Black has a better light absorbing effect.

In details, the terminal device is a mobile phone.

In details, the middle frame 10 further includes a protrusion 14disposed on the side 12. The protrusion 14 encircles the side 12 to forman accommodating groove 15 on the side 12. The accommodating groove 15is used for accommodating a glass cover plate 40. The glass cover plate40 protects the display module 30 when the terminal device is used.

Further, the glass cover plate 40 further includes a touch unit 50, suchthat the display module 30 has a touch function.

In details, the display module 30 includes a backlight module 31 and adisplay panel 32 disposed on the backlight module 31.

The backlight module 31 includes a plastic frame 311, a light guideplate 312 disposed in the plastic frame 311, a reflective sheet 313disposed on one side of the light guide plate 312 opposite another sideof the light guide plate 312 facing the a display panel 32, an opticalfilm group 314 disposed on the side of the light guide plate 312 facingthe display panel 32, and a double-sided adhesive 315 disposed on theplastic frame 311.

The plastic frame 311, the reflective sheet 313, and the double-sidedadhesive 315 are all light transmissive to some extent. For example, theentire brightness of the backlight module 31 is 11500 nits, the sum ofthe brightness of light transmitted through the plastic frame 311 andthe double-sided adhesive 315 is 690 nits, and the brightness of lighttransmitted through the reflective sheet 313 is 120 nits. Therefore, inthe present disclosure, the light-absorbing and heat-dissipating film 20is set to absorb all light transmitted through the plastic frame 311,the reflective sheet 313, and the double-sided adhesive 315 to preventthe transmitted light from being reflected from the side 12 of themiddle frame 10 to the surface of the display module 30.

In details, the shape of the double-sided adhesive 315 is hollowrectangle.

In details, the display panel 32 and the backlight module 31 are bondedtogether by the double-sided adhesive 315.

In details, the glass cover plate 40 and the display module 30 arebonded together by an optically clear adhesive (OCA) 34.

In details, the glass cover plate 40 includes a visible area 41 locatedover the display module 30 (that is, the visible area of the terminaldevice) and a shading area 42 surrounding the visible area 41. Theshading area 42 is used for further avoiding the light leaking from theside face of the display module 30. Without light-absorbing andheat-dissipating film 20, the light transmitted through the plasticframe 311, the reflective sheet 313, and the double-sided adhesive 315is reflected by the side 12 of the middle frame 10, and emitted from thejunction of the visible area 41 and the shading area 42. Therefore, inthe present disclosure, the light-absorbing and heat-dissipating film 20and the shading area 42 operate in coordination to completely avoidlight leaking from two sides of the view area of the terminal device.

Further, the shading area 42 is provided with ink.

In conclusion, the terminal device of the present invention includes themiddle frame, the light-absorbing and heat-dissipating film disposed inthe middle frame, and the display module. The middle frame includes thebottom and the side connected to the bottom. The side encircles thebottom to form the groove on the bottom. The light-absorbing andheat-dissipating film covers the inner surfaces of the bottom and theside. The display module is disposed in the groove. When the lightleaking from a side face of the display module is emitted to the side ofthe middle frame, the light-absorbing and heat-dissipating film canabsorb the light leaking from the side face of the display module. Thelight leaking from the side face of the display module is preventingfrom being reflected from the side of the middle frame to the surface ofthe display module. The white spots are prevented from appearing on thetwo sides of the visible area of the terminal device. The black visualeffects of the terminal device are improving. In addition, thelight-absorbing and heat-dissipating film can further dissipate the heatfrom the display module fast during work to reduce the temperature ofthe terminal device during work and prolong the service life.

A person of ordinary skill in the art can make various correspondingalternations and variations to the foregoing descriptions according tothe technical solution and the technical idea of the present invention,and all the alternations and variations shall fall within the protectionscope of the claims of the present invention.

What is claimed is:
 1. A terminal device, comprising: a middle frame; alight-absorbing and heat-dissipating film disposed in the middle frame;and a display module, wherein the middle frame comprises a bottom and aside connected to the bottom; the side encircles the bottom to form agroove on the bottom; the light-absorbing and heat-dissipating filmcovers the inner surfaces of the bottom and the side; and the displaymodule is disposed in the groove.
 2. The terminal device as claimed inclaim 1, wherein the color of the light-absorbing and heat-dissipatingfilm is black.
 3. The terminal device as claimed in claim 1, wherein themiddle frame further comprises a protrusion disposed on the side, theprotrusion encircles the side to form an accommodating groove on theside, and the accommodating groove is used for accommodating a glasscover plate.
 4. The terminal device as claimed in claim 3, wherein theglass cover plate further comprises a touch unit.
 5. The terminal deviceas claimed in claim 1, wherein the display module comprises a backlightmodule and a display panel disposed on the backlight module and thebacklight module comprises: a plastic frame; a light guide platedisposed in the plastic frame; a reflective sheet disposed on one sideof the light guide plate opposite another side of the light guide platefacing the display panel; an optical film group disposed on the side ofthe light guide plate facing the display panel; and a double-sidedadhesive disposed on the plastic frame.
 6. The terminal device asclaimed in claim 5, wherein the shape of the double-sided adhesive ishollow rectangle.
 7. The terminal device as claimed in claim 5, whereinthe display panel and the backlight module are bonded together by thedouble-sided adhesive.
 8. The terminal device as claimed in claim 3,wherein the glass cover plate and the display module are bonded togetherby an optically clear adhesive (OCA).
 9. The terminal device as claimedin claim 3, wherein the glass cover plate comprises a visible arealocated over the display module and a shading area surrounding thevisible area.
 10. The terminal device as claimed in claim 9, wherein theshading area is provided with ink.